From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 4 Jun 2012 13:42:39 +0000 (+0000)
Subject: ath9k: fix ANI weak signal detection handling
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=c9e36f4709ca2ed215699b9e29df817fff95e422;p=openwrt%2Fstaging%2Fthess.git

ath9k: fix ANI weak signal detection handling

SVN-Revision: 32045
---

diff --git a/package/mac80211/patches/570-ath9k_remove_noiseFloor.patch b/package/mac80211/patches/570-ath9k_remove_noiseFloor.patch
new file mode 100644
index 0000000000..fb17dc566a
--- /dev/null
+++ b/package/mac80211/patches/570-ath9k_remove_noiseFloor.patch
@@ -0,0 +1,52 @@
+--- a/drivers/net/wireless/ath/ath9k/ani.h
++++ b/drivers/net/wireless/ath/ath9k/ani.h
+@@ -128,7 +128,6 @@ struct ar5416AniState {
+ 	u32 listenTime;
+ 	int32_t rssiThrLow;
+ 	int32_t rssiThrHigh;
+-	u32 noiseFloor;
+ 	u32 ofdmPhyErrCount;
+ 	u32 cckPhyErrCount;
+ 	int16_t pktRssi[2];
+--- a/drivers/net/wireless/ath/ath9k/ani.c
++++ b/drivers/net/wireless/ath/ath9k/ani.c
+@@ -266,11 +266,9 @@ static void ath9k_hw_set_ofdm_nil(struct
+ 	const struct ani_ofdm_level_entry *entry_ofdm;
+ 	const struct ani_cck_level_entry *entry_cck;
+ 
+-	aniState->noiseFloor = BEACON_RSSI(ah);
+-
+ 	ath_dbg(common, ANI, "**** ofdmlevel %d=>%d, rssi=%d[lo=%d hi=%d]\n",
+ 		aniState->ofdmNoiseImmunityLevel,
+-		immunityLevel, aniState->noiseFloor,
++		immunityLevel, BEACON_RSSI(ah),
+ 		aniState->rssiThrLow, aniState->rssiThrHigh);
+ 
+ 	if (aniState->update_ani)
+@@ -292,7 +290,7 @@ static void ath9k_hw_set_ofdm_nil(struct
+ 				     ATH9K_ANI_FIRSTEP_LEVEL,
+ 				     entry_ofdm->fir_step_level);
+ 
+-	if ((aniState->noiseFloor >= aniState->rssiThrHigh) &&
++	if (BEACON_RSSI(ah) >= aniState->rssiThrHigh &&
+ 	    (!aniState->ofdmWeakSigDetectOff !=
+ 	     entry_ofdm->ofdm_weak_signal_on)) {
+ 			ath9k_hw_ani_control(ah,
+@@ -329,15 +327,14 @@ static void ath9k_hw_set_cck_nil(struct 
+ 	const struct ani_ofdm_level_entry *entry_ofdm;
+ 	const struct ani_cck_level_entry *entry_cck;
+ 
+-	aniState->noiseFloor = BEACON_RSSI(ah);
+ 	ath_dbg(common, ANI, "**** ccklevel %d=>%d, rssi=%d[lo=%d hi=%d]\n",
+ 		aniState->cckNoiseImmunityLevel, immunityLevel,
+-		aniState->noiseFloor, aniState->rssiThrLow,
++		BEACON_RSSI(ah), aniState->rssiThrLow,
+ 		aniState->rssiThrHigh);
+ 
+ 	if ((ah->opmode == NL80211_IFTYPE_STATION ||
+ 	     ah->opmode == NL80211_IFTYPE_ADHOC) &&
+-	    aniState->noiseFloor <= aniState->rssiThrLow &&
++	    BEACON_RSSI(ah) <= aniState->rssiThrLow &&
+ 	    immunityLevel > ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI)
+ 		immunityLevel = ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI;
+ 
diff --git a/package/mac80211/patches/571-ath9k_ani_fix_weak_sig.patch b/package/mac80211/patches/571-ath9k_ani_fix_weak_sig.patch
new file mode 100644
index 0000000000..bfe0f0b46f
--- /dev/null
+++ b/package/mac80211/patches/571-ath9k_ani_fix_weak_sig.patch
@@ -0,0 +1,30 @@
+--- a/drivers/net/wireless/ath/ath9k/ani.c
++++ b/drivers/net/wireless/ath/ath9k/ani.c
+@@ -265,6 +265,7 @@ static void ath9k_hw_set_ofdm_nil(struct
+ 	struct ath_common *common = ath9k_hw_common(ah);
+ 	const struct ani_ofdm_level_entry *entry_ofdm;
+ 	const struct ani_cck_level_entry *entry_cck;
++	bool weak_sig;
+ 
+ 	ath_dbg(common, ANI, "**** ofdmlevel %d=>%d, rssi=%d[lo=%d hi=%d]\n",
+ 		aniState->ofdmNoiseImmunityLevel,
+@@ -290,13 +291,15 @@ static void ath9k_hw_set_ofdm_nil(struct
+ 				     ATH9K_ANI_FIRSTEP_LEVEL,
+ 				     entry_ofdm->fir_step_level);
+ 
+-	if (BEACON_RSSI(ah) >= aniState->rssiThrHigh &&
+-	    (!aniState->ofdmWeakSigDetectOff !=
+-	     entry_ofdm->ofdm_weak_signal_on)) {
++	weak_sig = entry_ofdm->ofdm_weak_signal_on;
++	if (ah->opmode == NL80211_IFTYPE_STATION &&
++	    BEACON_RSSI(ah) >= aniState->rssiThrHigh)
++		weak_sig = true;
++
++	if (!aniState->ofdmWeakSigDetectOff != weak_sig)
+ 			ath9k_hw_ani_control(ah,
+ 				ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION,
+ 				entry_ofdm->ofdm_weak_signal_on);
+-	}
+ }
+ 
+ static void ath9k_hw_ani_ofdm_err_trigger(struct ath_hw *ah)